Home / 10,455.05-15,704.45-8,814.80

Finding the Fourth Proportional to 10,455.05, 15,704.45 and 8,814.80

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Solution

The fourth proportional to 10,455.05, 15,704.45 and 8,814.80 is: 13,240.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,455.05 : 15,704.45 = 8,814.80 : x
  2. Step 2: Convert to fraction form
    10,455.05/15,704.45 = 8,814.80/x
  3. Step 3: Cross multiply
    10,455.05x = 15,704.45 × 8,814.80
  4. Step 4: Simplify right side
    10,455.05x = 138,431,585.86
  5. Step 5: Solve for x
    x = 138,431,585.86/10,455.05
  6. Step 6: Final answer
    x = 13,240.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.